Mott Co. includes one coupon in each bag of dog food it sells. In return for eight coupons, customers receive a leash. The leashes cost Moll $2.00 each Mott estimates that 40 percent of the coupons will be redeemed. Data for 2014 and 2015 are as follows Bags of dog food sold Leashes purchased Coupons redeemed 2014 2015 500,000 600,000 18,000 22.000 120,000 150,000 The premium liability at December 31, 2014 is O a $20.000 O b. $7,500 Oc $17,500 Od $10,000